Westerbeke 8.0KW-60Hz Service Manual page 52

BIlWWATEBRUMR fRN.
48Q~q)
.
"
~
Disassembly
NOTE:
Refer to the following poge for parts list and exploded
vievv. .
The pumP,1!S removeli fro!Il the engine, will have hose
attru:hment nipples threaded
hito
its inlet and outlet ports.
They may be left in place or removed if they interfere with
the puinp disassembly. Note the port location and positionhlg
if removed. . . .
1. Remove the six cover plate screws, cover' plate, and the
cover plate gasket
NOTE:
Replacement oj the cover plflte gasket is recom·
mended; however,
if
you are going to reuse it, keep the
gasket submerged in water until the pump is reassembled.
If
it~
allowed to dry, the gasket will shrink and not be
reusable. .
2. Remove·the impeller with its drive screw from the pump
housing ..
3. Remove the'screw and sealing washer' and remove tlie
cam from the pump housing.
4. Remove the wear plate and leave the pin in place.
S. Remove the front circlip, washer and water seal.
6. Remove the rear circlip
7. Support the pUmp housing at the mounting flange end.
Using an arbor press and with a suitabie drift,' carefully
press the shaft with bearings from the pump housing.
8. The slinger and oil seal will remain
hi
the housing.
Remove the oil
se~
and slinger.
9. Support the bearings inner race and push the shaft out of
the bearings.
Inspection
Inspect all parts and replace those showing wear, cracks or
corrosion. .
Reassembly
1. Suppon the bearings inner race, Press the shaft into the
bearings so that the drive end of the shaft extends beyond
the second bearings inner race by 19/32" (15mm.)
1/32" (.5mm) , .'
NOTE:
The
seals' fiat suifaces that have printing
ana
numbers face toward each other. .
2. . Install the oil seal'in the pump housing.
3 •. Support the pump.Lubricate the shaft and slide it thru the
oil :sem and press the bearings with shaft into the housing
s0t?R!' the outer bearing just clears the rear circlip .
retaining groove., . ,
4; Install the rear circlip and press the shaft with bearings so
that the outer bearing seats on the rear circlip.
S. Lubricate the slinger and slide it onto ·the shaft so that it
is visible
~dway
thruugh the slotted openings of the
pump h\lUsrng.
6. Lubricate the inner harf of the water seal,slide it over the
shaft imd seat it in the pump housing. Install the outer
harf, washer and front clip to hold the seal in place. .
7. Install the wear plate and cam. Apply sealant (permatex
#1) to the cam screw threads and inner cam surfaces.
Remove excess.
8. Lubricate and install the impeller. Blade positioning does'
not matter.
NOTE:
U!e the lubricant that comes with the impeller.
Coat only the surface. Do not over-apply. .
9. Iilstall the O-ring and cover plate.
(continued)
Engines & Generators
46
)